+ if (!(device = devc->device))
+ return TRUE;
+
+ pch = devc->cur_acquisition_channel->priv;
+
+ channel_group_cmd = 0;
+ channel_group_name = NULL;
+ if (g_slist_length(sdi->channel_groups) > 1) {
+ channel_group_cmd = SCPI_CMD_SELECT_CHANNEL;
+ channel_group_name = pch->hwname;
+ }
+
+ /*
+ * When the current channel is the first in the array, perform the device
+ * specific status update first.
+ */
+ if (devc->cur_acquisition_channel == sr_next_enabled_channel(sdi, NULL) &&
+ device->update_status) {
+ device->update_status(sdi);
+ }
+
+ if (pch->mq == SR_MQ_VOLTAGE) {
+ gvtype = G_VARIANT_TYPE_DOUBLE;
+ cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
+ } else if (pch->mq == SR_MQ_FREQUENCY) {
+ gvtype = G_VARIANT_TYPE_DOUBLE;
+ cmd = SCPI_CMD_GET_MEAS_FREQUENCY;
+ } else if (pch->mq == SR_MQ_CURRENT) {
+ gvtype = G_VARIANT_TYPE_DOUBLE;
+ cmd = SCPI_CMD_GET_MEAS_CURRENT;
+ } else if (pch->mq == SR_MQ_POWER) {
+ gvtype = G_VARIANT_TYPE_DOUBLE;
+ cmd = SCPI_CMD_GET_MEAS_POWER;
+ } else {
+ return SR_ERR;
+ }
+
+ ret = sr_scpi_cmd_resp(sdi, devc->device->commands,
+ channel_group_cmd, channel_group_name, &gvdata, gvtype, cmd);
+
+ if (ret != SR_OK)
+ return ret;
+
+ if (devc->channels) {
+ /* Dynamically-probed devices. */
+ ch_spec = &devc->channels[pch->hw_output_idx];
+ } else {
+ /* Statically-configured devices. */
+ ch_spec = &devc->device->channels[pch->hw_output_idx];
+ }
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ /* Note: digits/spec_digits will be overridden later. */
+ sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
+ analog.meaning->channels = g_slist_append(NULL, devc->cur_acquisition_channel);
+ analog.num_samples = 1;
+ analog.meaning->mq = pch->mq;
+ analog.meaning->mqflags = pch->mqflags;
+ if (pch->mq == SR_MQ_VOLTAGE) {
+ analog.meaning->unit = SR_UNIT_VOLT;
+ analog.encoding->digits = ch_spec->voltage[4];
+ analog.spec->spec_digits = ch_spec->voltage[3];
+ } else if (pch->mq == SR_MQ_CURRENT) {
+ analog.meaning->unit = SR_UNIT_AMPERE;
+ analog.encoding->digits = ch_spec->current[4];
+ analog.spec->spec_digits = ch_spec->current[3];
+ } else if (pch->mq == SR_MQ_POWER) {
+ analog.meaning->unit = SR_UNIT_WATT;
+ analog.encoding->digits = ch_spec->power[4];
+ analog.spec->spec_digits = ch_spec->power[3];
+ } else if (pch->mq == SR_MQ_FREQUENCY) {
+ analog.meaning->unit = SR_UNIT_HERTZ;
+ analog.encoding->digits = ch_spec->frequency[4];
+ analog.spec->spec_digits = ch_spec->frequency[3];